EMB GmbH (Elektromotoren und Gerätebau Barleben GmbH) is a German specialist in high‑quality protection and monitoring devices for liquid‑filled power transformers and tap changers. With more than seven decades of engineering experience, EMB is recognized worldwide for its reliable Buchholz relays, tap‑changer monitoring relays, and advanced solutions for modern transformer protection.

Beyond classic Buchholz technology, EMB also provides dedicated protection devices for hermetically sealed transformers, including the HTS Hermetic Transformer Switch, precision pressure switches, and the CF38 gas relay, ensuring early fault detection even in sealed systems. This expanded expertise allows EMB to cover a wide range of transformer designs and operating environments with tailored, durable solutions.

EMB’s products stand out for their mechanical robustness, long service life, and dependable performance—each device individually tested to guarantee consistent functionality under demanding conditions. Their deep technical know‑how, modern manufacturing processes, and decades of field experience with millions of installed devices worldwide make EMB a trusted partner for transformer and tap‑changer manufacturers around the globe.